Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed55dc978d681257…

MALICIOUS

PDF

83.6 KB Created: 2021-04-06 17:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1ad28aec3b6779f2fd0a4f3c3b2cda1 SHA-1: 08de1d282c04f52a70b54afbce4fab7994395542 SHA-256: ed55dc978d681257d4778d7c18f94c5e9bbf08553417fc55c55d84027aaa31d1
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by heuristics as a link farm and potentially malicious. The primary URL, 'https://fokemale.ru/aws?utm_term=how+to+draw+lips+for+beginners+step+by+step', suggests a lure to a phishing or scam site. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7826

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://fokemale.ru/aws?utm_term=how+to+draw+lips+for+beginners+step+by+step
    • https://firulozide.weebly.com/uploads/1/3/0/7/130775295/de3de5c5b1895.pdf
    • http://strahauto.website/sky_battleship_total_war_of_shipsc4bu0.pdf
    • http://axecheat6.xyz/first_aid_injury_report_form_exampletj8xf.pdf
    • http://fafasun.iblogger.org/alkenes_11th_std_notes.pdf
    • https://sagejajake.weebly.com/uploads/1/3/5/3/135303377/7871919.pdf
    • http://arevakar-travel.com/631953589067drsv.pdf
    • http://getbuiss.online/59826885484plyo3.pdf
    • http://itclick.info/18779046032unw0n.pdf
    • http://sefobadivura.iblogger.org/13063921450.pdf
    • http://profyhouse.ru/munchkin_cards_list_with_picturespme40.pdf
    • http://ig-copyrighthelpcenter.com/jupyter_notebook_to_converterl3qfp.pdf
    • http://vkrowl.com/attila_total_war_ancient_empires_modcgffz.pdf
    • http://birunirako.22web.org/sears_craftsman_1_2_hp_garage_door_opener_remote.pdf
    • http://ig-copyrightnoticehelp.com/kohler_jacuzzi_tub_cleaningk7ygb.pdf
    • https://ridogorizaloliv.weebly.com/uploads/1/3/4/5/134527302/4b3035f6920952c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vedezaduxi.epizy.com/25151003310.pdf
    • http://xuxowav.epizy.com/algebraic_proofs_worksheet_with_answers.pdf
    • http://xotujulenibol.epizy.com/partituras_para_guitarra_acustica_gratis.pdf
    • http://wabalan.epizy.com/vogovevogoxu.pdf
    • http://gemuviwir.rf.gd/averroes_download.pdf
    • http://vudajerex.rf.gd/63601414069.pdf
    • http://nelenubo.rf.gd/bteup_scrutiny_form_2019_jobriya.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013d98.bin
b972f288bfe7e799fd25b2ca5d5913dac65ee40f4ae57a4a48000506fe0027dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x13D98 5292 bytes